Perhaps you should try some spelling variations:
"query processing algorithm" » "query modeling algorithm" (Expand Search), "query routing algorithm" (Expand Search), "query tracking algorithm" (Expand Search), "pre processing algorithm" (Expand Search)
"present data algorithms" » "present art algorithms" (Expand Search), "present all algorithms" (Expand Search), "present both algorithms" (Expand Search), "presence data algorithms" (Expand Search), "present day algorithms" (Expand Search), "recent data algorithms" (Expand Search)
"element meshs algorithm" » "element means algorithm" (Expand Search), "element best algorithm" (Expand Search), "element mean algorithm" (Expand Search), "element mesh algorithm" (Expand Search), "element method algorithm" (Expand Search)

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("present data algorithms") OR ((("query processing algorithm") OR ("element meshs algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"present data algorithms\") OR (((\"query processing algorithm\") OR (\"element meshs algorithm\"))))".
• Removing quotes may allow a broader search: (( present data algorithms ) OR ((( query processing algorithm ) OR ( element meshs algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("present data algorithms") OR ((("query processing algorithm") OR ("element meshs algorithm"))))*.